/*
 * Copyright (c) 2007-2013, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 */
package com.sun.org.apache.bcel.internal.util;

/* ====================================================================
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2001 The Apache Software Foundation.  All rights
 * reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. The end-user documentation included with the redistribution,
 *    if any, must include the following acknowledgment:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowledgment may appear in the software itself,
 *    if and wherever such third-party acknowledgments normally appear.
 *
 * 4. The names "Apache" and "Apache Software Foundation" and
 *    "Apache BCEL" must not be used to endorse or promote products
 *    derived from this software without prior written permission. For
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 *
 * 5. Products derived from this software may not be called "Apache",
 *    "Apache BCEL", nor may "Apache" appear in their name, without
 *    prior written permission of the Apache Software Foundation.
 *
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 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */

import java.io.*;
import java.util.BitSet;
import com.sun.org.apache.bcel.internal.classfile.*;
import com.sun.org.apache.bcel.internal.Constants;

/**
 * Read class file(s) and convert them into HTML files.
 *
 * Given a JavaClass object "class" that is in package "package" five files
 * will be created in the specified directory.
 *
 * <OL>
 * <LI> "package"."class".html as the main file which defines the frames for
 * the following subfiles.
 * <LI>  "package"."class"_attributes.html contains all (known) attributes found in the file
 * <LI>  "package"."class"_cp.html contains the constant pool
 * <LI>  "package"."class"_code.html contains the byte code
 * <LI>  "package"."class"_methods.html contains references to all methods and fields of the class
 * </OL>
 *
 * All subfiles reference each other appropiately, e.g. clicking on a
 * method in the Method's frame will jump to the appropiate method in
 * the Code frame.
 *
 * @version $Id: Class2HTML.java,v 1.3 2007-07-19 04:34:52 ofung Exp $
 * @author <A HREF="mailto:markus.dahm@berlin.de">M. Dahm</A>
*/
public class Class2HTML implements Constants {
    private JavaClass java_class; // current class object
    private String dir;

    private static String class_package; // name of package, unclean to make it static, but ...
    private static String class_name; // name of current class, dito
    private static ConstantPool constant_pool;

    /**
     * Write contents of the given JavaClass into HTML files.
     *
     * @param java_class The class to write
     * @param dir The directory to put the files in
     */
    public Class2HTML(JavaClass java_class, String dir) throws IOException {
        Method[] methods = java_class.getMethods();

        this.java_class = java_class;
        this.dir = dir;
        class_name = java_class.getClassName(); // Remember full name
        constant_pool = java_class.getConstantPool();

        // Get package name by tacking off everything after the last `.'
        int index = class_name.lastIndexOf('.');
        if (index > -1)
            class_package = class_name.substring(0, index);
        else
            class_package = ""; // default package

        ConstantHTML constant_html = new ConstantHTML(dir, class_name, class_package, methods, constant_pool);

        /* Attributes can't be written in one step, so we just open a file
         * which will be written consequently.
         */
        AttributeHTML attribute_html = new AttributeHTML(dir, class_name, constant_pool, constant_html);

        MethodHTML method_html = new MethodHTML(dir, class_name, methods, java_class.getFields(), constant_html, attribute_html);
        // Write main file (with frames, yuk)
        writeMainHTML(attribute_html);
        new CodeHTML(dir, class_name, methods, constant_pool, constant_html);
        attribute_html.close();
    }

    public static void _main(String argv[]) {
        String[] file_name = new String[argv.length];
        int files = 0;
        ClassParser parser = null;
        JavaClass java_class = null;
        String zip_file = null;
        char sep = SecuritySupport.getSystemProperty("file.separator").toCharArray()[0];
        String dir = "." + sep; // Where to store HTML files

        try {
            /* Parse command line arguments.
             */
            for (int i = 0; i < argv.length; i++) {
                if (argv[i].charAt(0) == '-') { // command line switch
                    if (argv[i].equals("-d")) { // Specify target directory, default '.'
                        dir = argv[++i];

                        if (!dir.endsWith("" + sep))
                            dir = dir + sep;

                        new File(dir).mkdirs(); // Create target directory if necessary
                    } else if (argv[i].equals("-zip"))
                        zip_file = argv[++i];
                    else
                        System.out.println("Unknown option " + argv[i]);
                } else
                    // add file name to list */
                    file_name[files++] = argv[i];
            }

            if (files == 0)
                System.err.println("Class2HTML: No input files specified.");
            else { // Loop through files ...
                for (int i = 0; i < files; i++) {
                    System.out.print("Processing " + file_name[i] + "...");
                    if (zip_file == null)
                        parser = new ClassParser(file_name[i]); // Create parser object from file
                    else
                        parser = new ClassParser(zip_file, file_name[i]); // Create parser object from zip file

                    java_class = parser.parse();
                    new Class2HTML(java_class, dir);
                    System.out.println("Done.");
                }
            }
        } catch (Exception e) {
            System.out.println(e);
            e.printStackTrace(System.out);
        }
    }

    /**
     * Utility method that converts a class reference in the constant pool,
     * i.e., an index to a string.
     */
    static String referenceClass(int index) {
        String str = constant_pool.getConstantString(index, CONSTANT_Class);
        str = Utility.compactClassName(str);
        str = Utility.compactClassName(str, class_package + ".", true);

        return "<A HREF=\"" + class_name + "_cp.html#cp" + index + "\" TARGET=ConstantPool>" + str + "</A>";
    }

    static final String referenceType(String type) {
        String short_type = Utility.compactClassName(type);
        short_type = Utility.compactClassName(short_type, class_package + ".", true);

        int index = type.indexOf('['); // Type is an array?
        if (index > -1)
            type = type.substring(0, index); // Tack of the `['

        // test for basic type
        if (type.equals("int") || type.equals("short") || type.equals("boolean") || type.equals("void") || type.equals("char") || type.equals("byte") || type.equals("long") || type.equals("double") || type.equals("float"))
            return "<FONT COLOR=\"#00FF00\">" + type + "</FONT>";
        else
            return "<A HREF=\"" + type + ".html\" TARGET=_top>" + short_type + "</A>";
    }

    static String toHTML(String str) {
        StringBuffer buf = new StringBuffer();

        try { // Filter any characters HTML doesn't like such as < and > in particular
            for (int i = 0; i < str.length(); i++) {
                char ch;

                switch (ch = str.charAt(i)) {
                    case '<':
                        buf.append("&lt;");
                        break;
                    case '>':
                        buf.append("&gt;");
                        break;
                    case '\n':
                        buf.append("\\n");
                        break;
                    case '\r':
                        buf.append("\\r");
                        break;
                    default:
                        buf.append(ch);
                }
            }
        } catch (StringIndexOutOfBoundsException e) {
        } // Never occurs

        return buf.toString();
    }

    private void writeMainHTML(AttributeHTML attribute_html) throws IOException {
        PrintWriter file = new PrintWriter(new FileOutputStream(dir + class_name + ".html"));
        Attribute[] attributes = java_class.getAttributes();

        file.println("<HTML>\n" + "<HEAD><TITLE>Documentation for " + class_name + "</TITLE>" + "</HEAD>\n" + "<FRAMESET BORDER=1 cols=\"30%,*\">\n" + "<FRAMESET BORDER=1 rows=\"80%,*\">\n" +

        "<FRAME NAME=\"ConstantPool\" SRC=\"" + class_name + "_cp.html" + "\"\n MARGINWIDTH=\"0\" " + "MARGINHEIGHT=\"0\" FRAMEBORDER=\"1\" SCROLLING=\"AUTO\">\n" + "<FRAME NAME=\"Attributes\" SRC=\"" + class_name + "_attributes.html" + "\"\n MARGINWIDTH=\"0\" " + "MARGINHEIGHT=\"0\" FRAMEBORDER=\"1\" SCROLLING=\"AUTO\">\n" + "</FRAMESET>\n" +

        "<FRAMESET BORDER=1 rows=\"80%,*\">\n" + "<FRAME NAME=\"Code\" SRC=\"" + class_name + "_code.html\"\n MARGINWIDTH=0 " + "MARGINHEIGHT=0 FRAMEBORDER=1 SCROLLING=\"AUTO\">\n" + "<FRAME NAME=\"Methods\" SRC=\"" + class_name + "_methods.html\"\n MARGINWIDTH=0 " + "MARGINHEIGHT=0 FRAMEBORDER=1 SCROLLING=\"AUTO\">\n" + "</FRAMESET></FRAMESET></HTML>");

        file.close();

        for (int i = 0; i < attributes.length; i++)
            attribute_html.writeAttribute(attributes[i], "class" + i);
    }
}
